A new method of measuring telephoto lens focal length is presented in this paper.
提出一种新的测量长焦透镜焦距的方法。
参考来源 - 基于图像匹配的长焦透镜焦距测量研究Using Gradual Aberration optimization Method, a 6m focal length, 600mm aperture off-axis aspherical optical system is successfully aligned.
采用像差逐项优化法,成功地装调了焦距为6m 口径600 mm 的离轴三反镜光学系统。
参考来源 - 三反射镜光学系统的计算机辅助装调技术研究·2,447,543篇论文数据,部分数据来源于NoteExpress
N the distance from the focal point of a lens or mirror to the reflecting surface of the mirror or the centre point of the lens 焦距
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